(1. 昆明理工大學(xué) 材料與冶金工程學(xué)院，昆明 650093；
2. 云南大學(xué) 信息學(xué)院，昆明 650093)
摘 要: 采用微波諧振腔微擾法測定了碳質(zhì)還原劑和鈦精礦混合物料的吸波特性，研究了碳質(zhì)還原劑配入鈦精礦不同比例時(shí)混合物的吸波特性與材料的復(fù)介電常數(shù)(ε″)、微波場內(nèi)熱源強(qiáng)度p的關(guān)系。分析結(jié)果表明：當(dāng)粒度為147~175 µm時(shí)，鈦精礦的吸波特性優(yōu)于椰殼碳、焦碳和無煙煤的；且通過比較復(fù)介電常數(shù)的大小確定了椰殼碳和鈦精礦最佳配比為20%，焦碳和鈦精礦最佳配比為14%，無煙煤和鈦精礦最佳配比為5%；并在此配比條件下得到了ε″和p的最大值。
關(guān)鍵字: 鈦精礦；配碳量；碳質(zhì)還原劑；吸波特性
proportions of carbonaceous reducer and ilmenite in microwave field
ZHANG Shi-min1, LI Yu1, LEI Ying1
（1. Faculty of Materials and Metallurgical Engineering,Kunming University of Science and Technology,
Kunming 650093, China;
2. School of Information Science and Engineering, Yunan University,Kunming 650091, China）
Abstract:The microwave-absorbing characteristics of the mixtures about carbonaceous reducer and ilmenite were measured by the technique of microwave cavity perturbation and the relationships between p and the microwave-absorbing characteristic of the mixtures were studied. The results indicate when the particles sizes of the mixtures are 147~175 µm, the microwave-absorbing characteristic of ilmenite is better than those of coconut carbon, coke and anthracite. And the optimal proportions of coconut carbon and ilmenite coke, ilmenite anthracite and ilmenite are defined as 20%, 14% and 5%, respectively. ε″ and p reach up to the maximums under the above conditions.
Key words: ilmenite; proportions of carbon; carbonaceous reducer; microwave-absorbing characteristic
